baber/WOPTO huggingface dataset:
Patent GB-467531-A (GB)
Title: Improvements in and relating to the treatment of rubber
IPC: C08C19/10
Filed: 1936-05-04
Abstract: Rubber derivatives are produced by treating a solution of rubber with a fluorine compound of boron or phosphorus, particularly boron trifluoride or phosphorus pentafluoride.  The solution should contain a dehydrating agent, e.g. acetic acid and/or be rendered substantially anhydrous by the distillation therefrom of a portion of the solvent.  The reaction may be accelerated by heating.  The rubber derivatives may be isolated by treating the reaction mixture with an excess of aqueous sodium carbonate, removing the solvent by steam distillation, separating out the solid product, washing with water and drying about 70 DEG  C. With increasing length of treatment the product is first soft and sticky but soluble in rubber solvents, then harder and increasingly insoluble, and finally hard and brittle and soluble. The final products are thermoplastic and may be used for the production of moulded articles, films and threads and solutions thereof may be used as varnishes or lacquers; the resulting products are, however, brittle.  Less brittle products may be obtained, (a) by treating with the fluorine compounds solutions of rubber in crude solvents such as motor spirit or in mixtures of volatile solvents and solvent oil such as liquid paraffin, (b) by avoiding heat treatment of the rubber derivatives when not in solution, e.g. the steam distillation referred to above may be avoided by isolating the rubber derivatives by treating the reaction mixture with solid instead of aqueous sodium carbonate, separating the neutralized liquid by decantation &c. and removing the solvent if desired.  The rubber derivatives may be compounded with materials such as pigments, mineral oils, paraffin wax, rosin, ester gum, stearic acid, beeswax, ozokerit, carnauba wax, chlorinated naphthalene and preferably with antioxidants such as hydroquinone, pyrocatechin, pyrogallol, p-amino phenol, and cumarone resin.
Patent GB-162661-A (GB)
Title: Automatic vacuum soldering machine
IPC: B23K1/00
Filed: 1921-05-02
Abstract: 162,661. Chakravarty, A. C. Mav 3, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings referred to in Specification, but not filed. Soldering filled receptacles.-In a machine for automatically sealing cans filled with meat &c., the, cans are mounted in chambers on a carrier, from which air is automatically exhausted through the filler opening and the cans then automatically soldered round the filler opening, thus avoiding the necessity for a pin hole in the lid for exhausting and sealing purposes. The carrier which is continuously rotated by bevel and worm gear round a hollow casting is provided with a series of arms at the ends of which are cylindrical chambers below which are a corresponding number of blocks on spindles engaging a cam track on an annular extension from the casting for raising the cans in turn into the chambers and closing the ends of the chambers. The chambers have flared ends for centring the cans and are provided with rubber rings for sealing the chambers. The arms are hollow and connect the chambers with curved ports on the hub of the carrier, which move over elongated ports in the centre of the casting, which is connected to the suction apparatus. After exhaustion is effected the ports move out of alignment during the soldering operation, and after soldering is completed the chambers are put into communication with ports leading to the atmosphere. The cans are first placed on a feed table which is rotated by bevel gear from the carrier and are pushed on to the blocks in turn by radially moving plungers operated by a stationary cam. Pairs of pivoted guides are mounted on the table, being swung outwards at the receiving station by the means which operate the plungers and being swung inwards when they reach the position at which the cans are transferred to the carrier blocks. Each block contains a,lift plate operated by cams on a shaft provided with two pins engaging cams on the hollow casting, so as to push the can into contact with a soldering iron passing through an airtight joint in the upper housing of the chamber. The blocks are provided with cam-operated ejectors to remove the finished cans. Soldering-irons.-Each soldering-iron has an annular internally and externally bevelled edge and is mounted on a shaft rotated by an internally toothed continuous or gapped gear fixed to the hollow casting, the shaft having a slight longitudninal play so that the iron may press by gravity on the can. The irons are electrically heated by a filament or winding to which current is supplied by brushes to contacts secured to the shafts, the, brushes being electrically connected to further brushes on the carrier moving over contacts on the casting.
Patent GB-838261-A (GB)
Title: A method of and an arrangement for pickling wire or strip
IPC: C23G3/02
Filed: 1958-04-21
Abstract: 838,261. Cleaning metals. RUTHNER, O. April 21. 1958 [Jan. 10, 1958]. No. 12586/58. Class 82(2) [Also in Group XL(b)] Wire or strip is pickled by being led upwards and downwards in a looped path one or more times in a gas-tight and acidresistant tower wherein it is sprayed with acid such as HC1 or H 2 SO 4 . As shown, wire 2 is fed from feed-reel 1 to take-up reel 13 via rolls 4, 5, 6 in tower 3, and is sprayed with acid from nozzles 11. Spent acid collects in tank 17 from which it is fed back to nozzles 11 through a recovery plant. The rate of travel of the wire and hence the pickling rate may be controlled by varying the speeds of reels 1, 13, or by raising or lowering roll 6, in response to the output of photo-electric cells 14 which measure the brightness of the wire.
Patent GB-238317-A (GB)
Title: Improvements in and relating to trucks or undercarriages for railway, tramway and like vehicles
IPC: B61F15/16
Filed: 1924-05-22
Abstract: 238,317. Thomas, S. May 22, 1924 Vehicle-axle bearings; dust, excluding.-In an axle support in which the axle is capable of displacement in the direction of the wheel axis. the axlebox a is provided with rigidly attached wing members a, a<2> adapted resiliently to support the load and is also provided with rooking means such as a<4>, d<1> which enables an angular or tilting movement to take place between the axle-box and its axle as displacement takes place in the direction of the wheel axis. The wing members are preferably divided to accommodate the yoke g and the bearing springs b which are seated, preferably, on a rocking member c. The axle-bearing block d moves laterally with the axle by means such as a flange d<2> and groove e, and an oil and dust excluding washer f<1> is pressed against a seal f<2> on the axle-box by a spring f<3> which takes its abutment upon a collar f on the axle.
Patent GB-854992-A (GB)
Title: Method of coating heater wires
IPC: H01J9/08
Filed: 1957-04-17
Abstract: A wire to be employed as a heater, for example for an indirectly heated electron tube cathode, is first coated with a mixture of aluminium oxide and a binder, then dried in air at a temperature lower than the oxidising temperature of the wire, then immersed in a bath of aluminium nitrate solution, and finally heated in a reducing atmosphere.  In an example, a tungsten wire is passed through a slurry consisting of aluminium oxide, water, methyl alcohol and aluminium nitrate as binder, dried at 500 DEG -600 DEG C. in an air oven, immersed in a saturated aqueous solution of aluminium nitrate, then heated at 800 DEG -1000 DEG C. in an atmosphere of hydrogen.
Patent GB-740232-A (GB)
Title: Improvements in or relating to inflatable boats
Inventor: SCHEIBERT HANS
IPC: B63B7/08
Filed: 1954-04-30
Abstract: 740,232. Inflatable craft. SCHEIBERT, H., [trading as DEUTSCHE SCHLAUCHBOOTFABRIK]. April 30, 1954, No. 12625/54. Class 113. In an inflatable craft a rubber-coated, impregnated or otherwise prepared fabric panel 1 is connected rigidly and in an air-tight manner to the interior side walls 2, 2<SP>1</SP> of the body of the craft so that it forms with the bottom 3 of the craft and said interior side walls a hollow envelope 4 which when inflated occupies the interior space of the craft and serves to increase the buoyancy and load-carrying capacity thereof.
Patent GB-293159-A (GB)
Title: Improvements in floats, battens and like stage lighting or like apparatus
IPC: F21S2/00
Filed: 1927-05-11
Abstract: 293,159. Digby, T. J., and Gibbons, A. O. May 11, 1927. Stage, shop-window, and likelamps; lantern screens. -In a stage, shop-window, or like lamp adapted to produce white or coloured light, there is mounted in front of each of a series of equally-spaced light sources a number of superposed reciprocable slides each having a repeated series of clear and differently coloured transparent panels of equal pitch or size, so that the clear panels, or those of any one colour, can be brought coincident with the light sources, and preferably without passing through any of the other colours, or mixtures of the colours. In the form shown in Fig. 1, a light metal or other fire-proof casing 1 is arranged to project slightly above the outer edge of a stage floor 15, and is provided with a slightly inclined open front in which the slides 8. 9 are reciprocated. The slides are supported by blocks 6, 7, and the blocks and the lower slide may be fitted with ball-bearings 10. 11. Electric lamp bulbs 12, partly silvered as at 16, are arranged so that the filaments 14 are just above the edge of the floor 15 so that light issues parallel to the stage floor and within an angle 17-18 of about 90‹. The back of the casing 1 may be fitted with a reflector and may have one or more doors for the insertion of the bulbs. One slide 8 may carry amber, clear, and green panels A, C, G, and the other slide 9 may carry blue, clear, and red panels B, C, R, as shown in Fig. 3. and a fixed diffusing screen in the form of one or more pieces 31 of lightly-ground or frosted glass may be arranged in front of the slides. The slides may be connected by cables 19, 20 to controlling wheels 22, 23 which are mounted on a shaft 25 and are provided with handles 27 and with coloured segments a, c, g and b, c, r, adapted to be brought in turn coincident with white segments w on stationary brackets 24 so as to indicate which of the panels are in front of the bulbs 12. The handles 27 may have screwthreaded portions 28 engaging screwed brackets 29 so as to bind on the shaft 25 in order that a number of slides may be moved simultaneously by means of a master control-switch 26. In a modification the cables are secured to rods which bear coloured bars and are moved up and down opposite a fixed indicator.
Patent GB-794153-A (GB)
Title: Process for alkylating aromatic compounds
IPC: C07C37/14
Filed: 1956-04-25
Abstract: Aromatic hydrocarbons, and their hydroxy-and halo-derivatives, are alkylated with olefines or alkyl halides in the presence of anhydrous hydrogen fluoride and a preformed complex of boron trifluoride and an iron group metal fluoride.  Preferred aromatic compounds are monocyclic such as benzene, toluene, xylenes, ethylbenzene, mesitylene, ethyltoluenes, n-propyl benzene, cumene, C6-C18 alkyl benzenes and toluenes, styrene, vinyl toluenes, allyl benzene, phenol, cresols, chlorophenols, p-bromophenol, 2,4,6-trichloro- and -tribromophenols, guaiacol, and, isoeugenol, eugenol, carvacrol, thymol, o- and p-cyclohexyl phenols, catechol, resorcinol, hydroquinone, pyrogallol, hydroxyhydroquinone, phloroglucinol, fluoro-, chloro-, bromo- and iod0-benzenes, chloro- and bromo - toluenes, p - dichloro, 1,2,4 - trichloro -, 1,2,3,4 - tetrachloro - and 1,2,4,5 - tetrachlorobenzenes, p - dibromobenzene, o- and p-bromochlorobenzenes, o-, and p-bromoiodobenzenes and p - chloroiodobenzene.  Polycyclic compounds which may be used include diphenyl, diphenylmethane, triphenylmethane, fluorene, stilbene, naphthalene, anthracene, phenanthrene, naphthacene, rubrene and 2,21- and 4,41-dihydroxy-diphenyl. Olefines which may be used as alkylating agents include ethylene, propylene, 1- and 2-butenes, isobutylene, pentenes, olefine polymers of 6-18 carbon atoms, cyclopentane, cyclohexene, methylcyclopentene, methylcyclohexene, butadiene and isoprene, n-Butyl chloride is also referred to as an alkylating agent.  The complex of the catalyst is preferably formed from an iron-group metal in the divalent state and can be prepared by forming the metal fluoride and adding the boron trifluoride in the presence of hydrogen fluoride; the metal fluoride may be formed in situ from the metal and hydrogen fluoride.  It may be used in solution in HF when it should be present in an amount of at least one mol. per 150 mols. of HF, as a solid mass or slurry with HF when the HF should be present in an amount of at least 0.5 mol. per mol. of complex, or disposed on a carrier such as activated charcoal, aluminium fluoride, calcium fluoride, magnesium fluoride, strontium fluoride or barium fluoride, when the HF should be present in an amount of at least 0.01 mol. per mol. of complex. The hydrogen fluoride may be replaced by a C2-C6 alkyl fluoride which releases hydrogen fluoride under the reaction conditions.  Liquid phase conditions are preferred at -60 DEG  to 300 DEG  C.  The pressure should be sufficient to prevent the complex losing BF3 and may be 1-100 atmospheres.  A mol. ratio of alkylating agent to aromatic compound in the range of 1 : 2 to 1 : 20 is preferred.  Batch or continuous operations may be used.  The examples describe the preparation of a FeF2.BF3 complex and its use with hydrogen fluoride in reactions between (1) propylene and toluene; (2) ethylene and benzene; (3) n-butyl chloride and m-cresol; (4) a propylene tetramer fraction and benzene.
Patent GB-954777-A (GB)
Title: Device for the transmission of a potential difference between two successive cartridges stacked in a channel of a nuclear reactor
Inventor: LIERMANN JEAN
IPC: G21C17/10
Filed: 1963-03-29
Abstract: 954,777. Monitoring reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. March 29, 1963 [April 10, 1962], No. 12658/63. Heading G6C. A nuclear fuel element is provided at each end with a pair of electrical contacts for transmitting a potential difference, e.g. a thermocouple output, to the next fuel element, one of the contacts being a central stud mounted on an end plug and the other being mounted on the upper edge of a resilient cup, and the pair of contacts are connected together by sheathed electric conductors extending along the length of the fuel element. Fig. 2 shows part of the adjacent ends of two fuel elements which are enclosed in cans 20 sealed by end plugs 21. A metal support 24 is screwed or rivetted to the end plug 21 and the central contact 25 is secured to the support 24 by a screw 26. The outer contact 27 is rivetted to a flexible cup 28 which bears on the support 24 by means of a tubular casing 30 screwed to the support, ceramic spacing members 31 and 32 providing the necessary insulation. The contacts 25 and 27 are connected to the corresponding contacts on the other end of the fuel element of conductors 33 and 34 which are disposed within an insulating sheath 35 secured to a supporting lug (not shown) mounted between cooling pins on the can 20. The fuel elements may be provided with centring means 39,40 for aligning adjacent elements. Specification 954,776 is referred to.
Patent GB-1034171-A (GB)
Title: Iron powder especially suitable for coated welding electrodes, and a method for its production
IPC: B22F9/00
Filed: 1963-03-29
Abstract: A dry-reduced iron powder for coating welding electrodes consists of particles of a rounded shape and low pore volume having a maximum size of 35 mesh U.S.A. Standard (0.50 mm.) and a minimum size of 120 mesh U.S.A. Standard (0.125 mm.) and with an apparent density of 3.3-3.8 g/cm3. The powder is formed from sponge iron which is given a compressive cold working, e.g. by being rolled into strip or pressed into briquets, and thereafter annealed in a protective atmosphere at a temperature of 750 DEG -1200 DEG C. for between 15 minutes and 4 hours to produce limited sintering of the material.  After cooling the powder is crushed, milled and sieved to the desired sieve analysis.  Alloying elements such as Ni, Mo, Mn or Si may be mixed in with the iron powder before cold-working; an annealing temperature of 1000-1200 DEG C. then being used.  Soft annealing may take place after milling to the final sieve analysis.
Patent GB-592134-A (GB)
Title: Improvements relating to washing and like machines
IPC: D06F95/00
Filed: 1945-05-19
Abstract: 592,134. Tumbler driers. JONES, F. S. May 19, 1945, No. 12675. [Class 34 (ii)] [Also in Groups II and VIII] Laundry apparatus for washing and drying, of the sort in which the goods are loaded into a cage at one end and the cage is rotated on a substantially horizontal axis within a casing, has the axis of the cage arranged for tilting so that the goods can be discharged through the end opening. The casing is in two parts, the lower 22 fixed and having a hinge 23 transverse to the axle 19 of the cage 10 which is carried in the upper part 21 of the casing. The cage and the upper part of the casing can be tilted about the hinge 23 so as to discharge the goods through the end opening 13. A hinged door 20 closes the end aperture 16 in the casing which carries a motor 17 driving the cage through gearing 18. The division between the upper and lower parts of the casing slopes up from the hinge. The upper part is tilted by a pair of jacks 25 supplied with pressure fluid from an outside source, or from a pump driven by a small motor actuated under the machine controls. Alternatively, screw jacks operated manually or by power may be employed.
Patent GB-1497931-A (GB)
Title: Method for preparing cobalt phthalocyanine complex salts
IPC: C09B47/08
Filed: 1975-03-26
Abstract: 1497931 Preparing cobalt phthalocyanine complexes NIPPON CHEMICAL WORKS CO Ltd 26 March 1975 12731/75 Heading C4P Six co-ordinate complexes of cobalt phthalocyanine with aliphatic polyamines co-ordinated at the two ligand positions are prepared by reacting phthalodinitrile and a cobalt metal donor in an alcoholic solvent (b.p. above 100‹ C.) at 100-150‹ C. to form a deep-purplish blue precipitate, adding an aqueous inorganic or organic acid at at least 50‹ C. until the reaction mixture is acid to Congo Red, and then reacting the precipitate as such or after separation with an aliphatic polyamine at a temperature not above 30‹ C. Cobalt chloride, nitrate or acetate is used, the alcoholic solvents include glycerin, ethylene- and, poly-ethyleneglycols, propylene- and poly-propylene-glycols, ethylene glycol mono methyl ether and octyl alcohol and the first reaction may take place in presence of urea or ammonium chloride as condensation agent. The polyamines used include ethylene diamine, propylene diamine, diethylamino-ethylamine, dimethylaminopropylamine and diethyl-aminopropylamine.
Patent GB-708542-A (GB)
Title: Improvements in and relating to electric heating elements
Inventor: ROWLAND LEONARD
IPC: H05B3/58
Filed: 1951-05-30
Abstract: 708,542. Eleotric heating resistances. HOBOURN AERO COMPONENTS, Ltd. Sept. 24, 1951 [May 30, 1951], No. 12759/51. Class 39 (3) A flexible electric heater is made as a cord or flat ribbon by braiding together several strands 1 of heatinsulating material such as fibre glass with one or more resistance wires 2 so that portions of the wire are exposed at the surface. The wire may be interlaced into the material during braiding of the fibre glass strands. The wires may be of nickel chromium and extend in tortuous or straight parallel paths through the insulating strands. The wire is held against short-circuiting self contact by the material and is free to expand and contract in relation to the glass strands. Two wires may be brought up respectively through the centre of the second horn gear from each edge, and in order to expose the wires on opposite sides of a braided ribbon, several bobbins are omitted at equal intervals in the braiding machine, whereby the wires are laid parallel in the ribbon, which is an open plait allowing air to pass through the braid. Alternatively a bobbin of resistance wire replaces a bobbin for the fibre glass, which gives the wire a zigzag path. The braid may be made on a cord or round machine, and by including alternate bobbins of wire and fibre glass, spirals of wire are insulated by the fibre glass. The heaters are mounted on formers, give black heat and may be used as convection heaters or for drying.
Patent GB-1042096-A (GB)
Title: Improvements in or relating to centrifugal casting
IPC: B22D13/02
Filed: 1965-03-25
Abstract: 1,042,096. Centrifugal casting. BLACK CLAWSON CO. March 25, 1965 [July 14, 1964], No. 12785/65. Addition to 1,039,143. Heading B3F. Centrifugal casting apparatus as described in the parent Specification 1,039,143 but in which the external source of pressure to the pressure chambers is omitted and the pressure produced in the pressure chambers during casting is provided by the pressure of the gases generated from the molten material being cast. Pressure relief means is provided and the pressure generated is maintained until after the material has solidified in the mould.
Patent GB-1340616-A (GB)
Title: Kasugamycin derivatives
IPC: C07H15/207
Filed: 1971-05-03
Abstract: 1340616 Kasugamycin derivatives; methyl 4-pyrimidinecarboximidate BRISTOL-MYERS CO 3 May 1971 [1 May 1970] 12812/71 Headings C2A and C2C Novel carbobenzoxy derivatives of kasugamycin having the general formula I and acid-addition salts thereof, wherein R is hydrogen or a radical of formula are prepared by reacting kasugamycin or its acid-addition salt with carbobenzoxy chloride at a pH above 7 to give a compound (Ib) having the Formula I in which R is the said radical, and if desired subjecting this compound to hydrolysis with a mild basis reagent to give a compound (Ia) having the Formula I in which R is hydrogen. The preferred salts are the mono-hydrochlorides. 1 to 10 molar equivalents of carbobenzoxy chloride are used per mole of kasugamycin and the pH may be kept above 7, preferably at pH 7 to 11, by addition of an alkali metal hydroxide in a heterogeneous aqueous-water immiscible solvent system. The hydrolysing agent used is hydrazine in an organic solvent such as a C 1  to C 4  alkanol. The inventive compounds are used for preparing semi-synthetic antibiotically active kasugamycin derivatives. For example, by reaction of compound (Ia) with (1) methyl acetamidate, and (2) 4-pyridinealdoxime or methyl-4-pyridinecarboximidate, in each case followed by catalytic hydrogenation to remove the carbobenzoxy residue, there are obtained compounds having an analogous structure to I above but wherein R is (1) acetamidino, and (2) piperidylcarboxamidino, and the carbobenzoxy-amino group is replaced by -NH 2 . Methyl 4-pyridinecarborimidate is prepared by reacting 4-cyanopyridine with sodium methoxide in methanol. Reference has been directed by the Comptroller to Specifications 1,094,566 and 1,244,026.
Patent GB-1495630-A (GB)
Title: Dyeing of anionic dyeable substrates
IPC: D06P1/00
Filed: 1975-03-27
Abstract: 1495630 Printing process using reserving agents SANDOZ Ltd 27 March 1975 [1 April 1974] 12867/75 Heading D1B Substrates which are dyeable with anionic dyes, are printed by applying (1) a reserving agent which is a colourless organic compound containing a group reactive with the substrate and also a sulphonic or carboxylic acid group and (2) one or more acid, direct or basic dyes, the reserving agent being applied to less than the whole area of the substrate, the dye and reserving agent being applied to at least one common area and being fixed in a single fixation step. Preferred reserving agents are halotriazine or halopyrimidine compounds and fixation is preferably by steaming. Specified substrates are polyamide, basic modified polypropylene and basic modified polyacrylonitrile, especially in carpet form. The reserving agent prevents the fixation of anionic dyes and also assists fixation of basic dyes. Multicolour effects are achieved by using combinations of acid and basic dyes, together with disperse and reactive dyes.